Moiseless tire



l AMDAS Jamo 29 3,9230

L. T. FREDEmCK.

NolsELass T|RE. FILED MAY 15. 1919.

ffy. 4.

fm.. BY

/v ATTORNEY Patented den.. 2 i192@ untreu stares" hddtdlbll PATENT CCDFFlCllO )LUIS 'l'. FREDERICK, @1F WILKNSBURG, FENNSYLVANA, ASSJIGNOR. TO WESTING- HOUSE ELECTRIC MANUFACTURKNG COMPANY, A CORFUJRATXGN 0F PENNSYL- VANIA.

' NISIELESS TERE.

Application tiled may t5,

To all whom t may concern:

Be it known that l, Louis 'l`. Finora, a citizen ot the UnitedStates, and a resident of llVilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a nevi7 and useful llmprovent in iloiseless Fires, of which the following is a specilicatlon.

My invent-ion relates to tires and it has, :tor its primary object, the provision ot tires which may be employed on the wheels ot vehicles utilized in moving merchandise in warehouses or other similar places Where vehicles of this type are employed.

@ne object of my invention is to provide tires which shall insure noiseless operation ot vehicles and which shall possess a relatively high coel'iicient of friction, thereby reducing the danger oi skidding ot the vehicle wheels and promoting better operating conditions.

A further object of my invention is to provide tires `which shall be unadected by moisture, Weak acids, allralis, oils and relatively wide temperature changes.

A still further object ot my invention is to provide tires tor trucks or like vehicles which 'shall be exceptionally durable and which shall obviate the danger of destroyin or materially injurin wood doors.

W ith these and other o jects in view, my invention will be more fully described, illustratedin the drawings, in the several views of which correspon ing numerals indicate lilre parts, and then particularly pointed out in the claims.

ln the drawings, Fig. l is a side view ot a. Wheel having a tire secured thereon which embodies my invention; Fig. 2 is a sectional view taken substantially along the line lllll of Fig. l; Fig. 3 is a side view or a modihed form ot wheel having a tire secured thereto in accordance vvith my invention, and Fig. 4l is a sectional vievv talren substantially along the line lll-ll?, of Fig 3.

ln practising my invention, l may provide a tire, for various types of vehicle wheels, by employing sheets ot fibrous material and sheets of material possessing a high coemcient oit friction, such as corl. 'lhe sheets ot' material may be cut or punched to form rings ot suitable dimension which may be impregnated with a suitable binder and stacked in layers to provide a 1919. Serial No. 297,354.

tire ot the required thickness. Y ln order to compact and unite the stacked material, it may be subjected to heat and pressure. 'lhe punched and treated material may also be subjected to heat and pressure atteibeing assembled upon the periphery or" the wheel to firmly secure it thereto. The corlr is employed to obtain a sufficiently high coefficient of friction in the iinished tire, and the iibrous material is utilized to increase its rigidity and mechanical strength.

lln Figs. l and 2 is shown a wheel l which comprises a hub portion 2 having an annular rim 3 formed integrally therewith. A. plurality ot tlanged rim members t are secured to the rim 3 by rivets 5to 'provide a suitable supporting base t'or a tire 6. The tire ti may comprise alternate layers of tibrous material, such as duck and corlr. lhe layers may be provided by punching suitable rings from the material which may be impregnated with a binder, such as a phenolic condensation product. The material may be treated with the binder and subjected to suticient heat to dry the binder, thus :Facilitating subsequent handling thereof.

ln order to secure the tire 6 to the vvheel l, the rings of treated material may be stacked to a suitable thiclrness and subjected to heat and pressure to compact the material and to harden the binder, thus forming a unitary body. '.lhe tire, termed in this manner, may be disposed upon the periphery of the rim 3, after which the members d may be secured to the rim by the rivets 5, thus providing a suitable support for the tire from which it cannot possibly be removed under vvorlring conditions.

The tire e may also be secured to the wheel l by disposing the punched layers ot treated material in place and then subjecting them to heat-and pressure to torna a compact and homogeneous tire. By applyine the heat and pressure to the material after 1t has been assembled upon the Wheel, a slight advantage may be obtained by reason of the binding action between the binder et the material and the rim et the wheel. lna wheel of the type shown in Figs. l and 2, however, this is unnecessary, as the rim provides ample fastening means to secure the tire in place.

ln Figs. 3 and d is shown a Wheel 7 having a rim 8.which is termed integrally with the hub portion 9. A tire l0, or the above lilo described character, may be secured to a Wheel of this type by assembling the punchings or rings or' treated material upon the periphery of the rim 8, after which heat and pressure may be applied to compact the layers of material and to harden the binder. 'lhe rim 8 may be roughened, as indicated at 1l, to insure better binding action between the tire and the rim. A tire molded upon a wheel in this manner possesses practically as great mechanical strength and remains as firmly in place as a tire disposed upon a flanged rim, such as shown in lFigs. 1 and 2.' This is true because of the exceptionally good binding action obtained between the treated material and the rim ot" the wheel.

Although alternate layers of duck and cork have been shown, it is entirely possible to employ layers of material assembled in various ways. For example, several layers ot' fibrous material to one layer of cork may be employed if the resulting coefficient of friction of a tire thus formed is sufficiently high for its intended duty. As fibrous material, such as duck, impregnated with a phenolic condensation product, possesses greater mechanical strength than cork correspondingly treated, it` Will be obvious that the greater the amount of duck employed, the greater the mechanical strength of the resultant tire will be. When alternate layers of duck and cork are employed, however, suilicient mechanical strength is vobtained for tires to be employed upon the remata .i

wheels of trucks, such as are usedtor moving merchandise in business houses. lFurthermore, the particular shape of the tire may be varied as desired. rllhe resulting shape of the tire may be easily governed by properly cutting the layers of material which are to be stacked and molded together to provide the tire.

Although ll have described a tire which mayl be constructed in accordance with my invention, it will be obvious that minor changes may be made in the construction thereof and li desire, therefore, that no limitations shall be imposed except such as are indicated in the appended claims.

li claim as my invention:

l. A tirecomprising layers of fibrous material and cork impregnated. with a hardened binder.

2. A tire comprising layers of duck and cork impregnated with a hardened binder.

3. A tire comprising layers of duck and cork impregnated with a hardened phenolic condensation product.

4. A tire comprising alternate layers of duck and cork impregnated with a hardened binder.

5. A tire comprising alternate layers ot duck and cork impregnated with a hardened phenolic condensation product.

llntestimony whereof, ll have hereunto ,f

subscribed my name this 29th day of April 1919.

LQlUllS T. FREDERICK. 

